Unleash the full potential of your industrial capabilities with the Large Power Oil-Lubricated Screw Compressor, exclusively from Sanzhi (Henan) Compressor Co., Ltd., renowned as China's leading supplier. Benefit from the unbeatable factory-direct pricing on this cutting-edge Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor. Expertly crafted to deliver exceptional energy savings and unmatched efficiency, this compressor features the finest High-Quality Centrifugal Fans. Set a new benchmark in reliability and performance with this stationary compressor, specifically designed for the most challenging industrial applications. Enhance your operational prowess with Sanzhi's 185kw High Volume Two-Stage Screw Air Compressor, offering extraordinary durability and consistency. Discover the pinnacle of efficiency, dependability, and cost savings with Sanzhi's advanced compressor technology, meticulously engineered to elevate your industrial processes to unprecedented levels of performance and sustainability.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an air compression utopia, the energy required for a single-stage compression process should ideally match the combined energy needed for multi-stage operations. However, in the real world, elements like coupling transmission inefficiencies, the friction of bearings, and the cooling impact of fluid viscosity raise the energy demand. To boost efficiency, it's crucial to minimize the compression ratio at each stage, ensuring that the total power for multi-stage compression is less than that needed for a single-stage process.
The two-stage screw air compressor is a marvel of modern engineering, showcasing a dual rotary screw system with both active and passive screws. The active screw, powered by an external mechanism, drives the passive counterpart. The process kicks off with a low-pressure screw set in the first stage, progressing to a high-pressure screw set in the second stage. Each screw is enshrouded in an air film that seals it, facilitating the compression of gas through a series of suction, pressurization, and release cycles as the screws rotate.
First Stage Compression: This crucial phase initiates the gas compression journey. The gas is drawn into the screw's compression chamber through the suction valve, where the screw rotor spins rapidly, compressing the gas and smoothly transferring it to the second stage.
Second Stage Compression: At this advanced juncture, the gas enters a more compact screw chamber, experiencing compression at markedly higher temperatures and pressures. The exhaust valve then opens, skillfully releasing the high-pressure gas from the system.
The process commences as ambient air is aspirated into the initial stage via an air filter. Here, it blends with a trace amount of lubricating oil in the compression chamber. The mixture is compressed to an intermediary pressure, then cooled in a channel where it contacts oil mist, significantly reducing its temperature. This cooled gas is then directed to the second-stage rotor for further compression to the ultimate exhaust pressure, culminating in the release of high-pressure gas through the exhaust valve, completing the cycle.
| Sanzhi (Henan) Compressor Co,. Ltd. |
| Two-Stage Compression Permanent Magnet Variable Frequency Screw Air Compressor |
| Model |
Power |
Exhaust pressure |
Free air delivery* of unit at working pressure |
Voltage |
Frequency |
Air outlet discharge size |
Weight |
Dimensions |
| KW |
Mpa |
m³/min |
V |
Hz |
Inch |
Kg |
L*W*H(mm) |
| SZ15VF-II |
15 |
0.5 |
4.00 |
380 |
50 |
G1½ |
660 |
1450*780*1180 |
| 0.8 |
3.00 |
| 1.3 |
2.00 |
| SZ19VF-II |
18.5 |
0.5 |
5.00 |
380 |
50 |
G1½ |
680 |
1450*780*1180 |
| 0.8 |
4.00 |
| 1.3 |
3.80 |
| 1.6 |
2.20 |
| SZ22VF-II |
22 |
0.5 |
6.60 |
380 |
50 |
G1½ |
730 |
1650*880*1280 |
| 0.8 |
4.20 |
| 1.3 |
3.00 |
| 1.6 |
2.50 |
| SZ30VF-II |
30 |
0.5 |
7.00 |
380 |
50 |
G1½ |
980 |
2000*1260*1560 |
| 0.8 |
6.40 |
| 1.3 |
4.00 |
| 1.6 |
3.00 |
| SZ37VF-II |
37 |
0.5 |
10.00 |
380 |
50 |
G1½ |
1080 |
2000*1260*1560 |
| 0.8 |
7.00 |
| 1.3 |
5.50 |
| 1.6 |
4.00 |
| SZ45VF-II |
45 |
0.5 |
13.00 |
380 |
50 |
G2 |
1980 |
2000*1260*1560 |
| 0.8 |
10.00 |
| 1.3 |
6.50 |
| 1.6 |
5.00 |
| SZ55VF-II |
55 |
0.5 |
17.00 |
380 |
50 |
G2 |
2180 |
2150*1300*1730 |
| 0.8 |
12.00 |
| 1.3 |
8.60 |
| 1.6 |
5.00 |
| SZ75VF-II |
75 |
0.5 |
20.00 |
380 |
50 |
G2 |
2280 |
2150*1300*1730 |
| 0.8 |
16.50 |
| 1.3 |
11.00 |
| 1.6 |
9.00 |
| SZ90VF-II |
90 |
0.5 |
24.00 |
380 |
50 |
DN65 |
3200 |
2700*1920*1820 |
| 0.8 |
20.00 |
| 1.3 |
14.00 |
| 1.6 |
11.00 |
| SZ110VF-II |
110 |
0.5 |
28.00 |
380 |
50 |
DN65 |
3360 |
2700*1920*1820 |
| 0.8 |
24.50 |
| 1.3 |
18.00 |
| 1.6 |
14.00 |
| Due to product updates, the above parameters are subject to deviation in kind. |
Experience the extraordinary power and efficiency of our High Volume Centrifugal Fan Two-Stage Air Compressor! This cutting-edge system, equipped with a high-speed rotating impeller, expertly accelerates and decelerates air, guaranteeing axial entry and swift cooling. It surpasses traditional air-cooled fans, supporting uninterrupted operations and significantly prolonging service life.
1) High Efficiency of PM Motor:Our cutting-edge permanent magnet motor boasts an expanded constant torque and weak magnetic range, offering an outstanding 20-30% boost in efficiency compared to standard motors. It consistently delivers superior performance, even beyond the rated frequency.
2) Maintenance-Free Motor:Crafted without internal bearings, our sophisticated permanent magnet motor eradicates the expensive maintenance and replacement issues associated with conventional motor bearings.
3) Integrated Frequency Converter:Featuring China's leading frequency system, our compressor showcases an extensive and precise speed regulation range. It adeptly adapts to actual gas demand, providing remarkable energy-saving capabilities.
4) Zero Transmission Loss:The integrated shaft structure directly links the permanent magnet motor to the compressor, eliminating couplings and transmission parts, ensuring impeccable 100% transmission efficiency.
5) Variable Frequency Start and Soft Start:This feature dramatically diminishes the impact on power grid equipment, effectively safeguarding electrical systems from potential damage.
6) Reduced Energy Consumption:Our frequency conversion ranges from 25% to 100%, surpassing the typical 50% to 100% range. This results in over 30% energy savings compared to fixed-speed air compressors and around 5% more than standard variable frequency compressors. Greater fluctuations in system gas consumption further elevate these energy-saving effects.
7) Unique Two-Stage Compression Air End:Our innovatively designed air end incorporates first-stage and second-stage compression rotors within a single case, each gear-driven. This setup ensures ideal linear speed and enhances overall compression efficiency.
8) Innovative Internal Spray Curtain Cooling Method:Our high energy-saving internal spray curtain cooling method offers exceptional cooling, substantially lowering the temperature of compressed air. It achieves near-isothermal compression, reduces interstage pressure loss, lowers compression ratios, and boosts overall compression efficiency.
9) Minimized Internal Leakage:By decreasing the compression ratio for each stage, our two-stage compression method minimizes internal leakage between high and low-pressure ends, greatly enhancing volume efficiency.
10) Noise Reduction:The two-stage compression system effectively reduces the compression ratio, resulting in significantly lowered noise levels, especially during unloading.
11) Easy Maintenance and Service:Featuring a two-stage compressor unit, the similarities in systems and structures to single-stage compression render maintenance and user servicing straightforward and convenient, aside from the screw air end.
12) Door panels are removable:The unit's casing, made from noise-treated metal plates, includes panels with high-density sound-absorbing material, ensuring noise levels meet international standards. The door plate can be opened and removed, providing a 270-degree all-round access, facilitating maintenance personnel's access to the unit's interior and enhancing ease of service and upkeep.
1. Unrivaled Price Competitiveness
We present direct ex-factory pricing, providing our esteemed customers with a formidable competitive edge in their respective markets. Revel in significant cost reductions without sacrificing quality, empowering you to dominate your market landscape with assured confidence.
2. Effortless Direct Transactions
With products dispatched directly from our factory floor, we offer budget-conscious solutions that keep quality intact. By eliminating middlemen, we transfer the savings right to you, ensuring cost-effectiveness without any compromise on excellence.
3. Superior OEM & ODM Services
Leveraging our cutting-edge production and management prowess, we provide top-tier OEM and ODM services that cater precisely to your requirements. Partner with us to bring your vision to fruition with unparalleled precision and quality.
4. Bespoke Customization
We welcome requests for non-standard, export, and custom orders covering voltage, power, pressure, and beyond. Connect with us to discuss your specific requirements, and we will engineer a solution tailored perfectly to match your distinct specifications.
5. Embracing Small Order Requests
Begin with a small trial order to witness firsthand the exceptional caliber of our offerings. Uncover why clients consistently depend on SANZHI for outstanding performance and unwavering reliability.
6. Expedited and Trustworthy Delivery
Benefit from our premium product range coupled with rapid and dependable delivery services. We ensure timely arrival of your orders, keeping your operational processes smoothly efficient.
7. Extensive Authorization Support
We provide full authorization certificates to our cherished distributors, empowering you to market SANZHI brand products with absolute assurance. Harness the power of our brand to elevate your sales and enhance your reputation.
Sanzhi (Henan) Compressor Co., Ltd. is an illustrious leader in the manufacturing sector, widely acclaimed for crafting high-performance screw air compressors and vacuum pumps. With over ten years of steadfast dedication, our varied product lineup boasts standard and low-pressure screw air compressors, state-of-the-art permanent magnet frequency conversion models, advanced two-stage compression units, compressors specifically designed for laser cutting, and flexible mobile screw compressors. Our products are available in both single and double-tank configurations, powered by electric or diesel options, and are complemented by our pioneering screw vacuum pumps.
Our production methodologies are the hallmark of efficiency and modernization, exemplified by our cutting-edge multi-air compressor assembly lines. Backed by a proficient team of over 50 dedicated employees, we continuously optimize our ERP-enhanced management systems, substantially decreasing lead times and guaranteeing the prompt delivery of top-tier products.
Upholding the highest standards, our manufacturing facility proudly bears the ISO9001 certification, a symbol of our steadfast commitment to impeccable quality management. We stringently enforce all-encompassing quality control protocols, ensuring each apparatus undergoes exhaustive material checks, production evaluations, and comprehensive pre-dispatch examinations before leaving our premises.
Our customer service philosophy is unparalleled. Our adept pre-sales team provides expert guidance in choosing the optimal air equipment, offering extensive customization options for both appearance and configuration. We excel in designing tailor-made OEM products to meet specific dealer requirements. Our after-sales team, consisting of seasoned professionals, ensures prompt and efficient responses to all customer inquiries and needs.
At Sanzhi (Henan) Compressor Co., Ltd., we are unwavering in our commitment to providing high-performance, dependable products that cultivate long-lasting customer relationships. Our streamlined delivery schedules, superior machines, and competitive pricing guarantee exceptional compressed air solutions with every interaction.
Strategically positioned in Xinzheng City, Henan Province, China, our factory offers convenient accessibility. We provide complimentary transport from Xinzheng International Airport to our premises, a swift 30-kilometer journey that takes approximately one hour. We warmly invite you to visit us and experience our dedication firsthand!
FAQ
Q1. Are you a trading company or a manufacturer?
A: We are a dedicated manufacturer specializing in screw air compressors, boasting over a decade of expert experience in the field.
Q2. How do you ensure quality control?
A: 1. We conduct rigorous inspections on raw materials.
2. We exercise stringent control over installation processes.
3. Each unit undergoes a minimum of 5 hours of continuous testing before being dispatched.
Q3. What details must I provide to obtain the right machine?
1. Specify the required air delivery capacity (Units: CFM or m³/Min).
2. Outline the necessary working pressure (Units: PSI, Bar, or Mpa).
3. Provide the voltage and frequency specific to your location (V/Hz).
4. Indicate any additional accessories needed, such as an air tank, filters, or air dryers.
Share these details with us, and we will customize the ideal solution for you!
Q4. What are the standard unit conversions?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What are the available voltage options for air compressors?
A: Sanzhi provides compressors with voltage options of 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can customize according to your special requirements.
Q6. What is the typical delivery time?
A: Experience lightning-fast delivery for our standard voltage specifications, with an impressively swift lead time of merely 15 working days following order confirmation. For bespoke, non-standard voltage needs, our expert sales team stands ready to craft delivery timelines that are precisely tuned to your specific requirements, ensuring a perfect fit for your demands.
Q7. What's the payment term?
A: Our transaction process is designed for your utmost convenience. Payment terms are structured as follows: commence with a 30% T/T deposit, proceed with a 40% T/T prior to shipment, and finalize with the remaining 30% T/T upon receipt of the B/L copy. Payments are accepted in both USD and RMB, catering to your financial preferences.
Q8. How about your warranty?
A: Enjoy peace of mind with our all-encompassing warranty program: a one-year warranty envelops the entire machine, complemented by an extended two-year warranty for the screw air compressor, covering all non-consumable components to ensure continuous protection.
Q9. What about the maintenance?
A: We advise initiating a maintenance check-up after the first 500 hours of operation. Subsequently, regular maintenance should be conducted every 2000-3000 hours, tailored to specific working conditions, to maintain peak performance and reliability.
Q10. Can machines be run in high-temperature environment?
A: Indeed, our machines are precisely engineered to excel in high-temperature conditions. They perform efficiently within a temperature range from -20° to 45° (-4ºF to 113ºF), ensuring reliable operation even in challenging environments.
Q11. Do you offer OEM service?
A: Certainly, we offer extensive OEM and ODM services. Our dedicated design team is devoted to crafting innovative and adaptable solutions tailored exactly to your specifications, ensuring a seamless fit with your brand vision.
Q12. How long could your air compressor be used?
A: Designed for unmatched longevity, our air compressors possess an impressive lifespan that exceeds 10 years, guaranteeing enduring reliability and complete peace of mind for years to come.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we guarantee the availability of vital spare parts for all our machinery, facilitating effective maintenance and prompt repairs to keep your operations running smoothly.
Q14. How about your after-sales service?
A: Our comprehensive after-sales service encompasses detailed online guidance for installation and commissioning. For your further convenience, we offer the option of dispatching engineers for on-site training and installation support, ensuring a seamless and effective start to your operations.
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